Strong Linear Dichroism in Spin-Polarized Photoemission from Spin-Orbit-Coupled Surface States

被引：33

作者：

Bentmann, H. ^{[1
,2
]}

Maass, H. ^{[1
,2
,3
]}

Krasovskii, E. E. ^{[4
,5
]}

Peixoto, T. R. F. ^{[1
,2
]}

Seibel, C. ^{[1
,2
]}

Leandersson, M. ^{[6
]}

Balasubramanian, T. ^{[6
]}

Reinert, F. ^{[1
,2
]}

机构：

[1] Univ Wurzburg, Expt Phys 7, D-97074 Wurzburg, Germany

[2] Univ Wurzburg, Rontgen Res Ctr Complex Mat RCCM, D-97074 Wurzburg, Germany

[3] Univ Basque Country, Euskal Herriko Unibertsitatea, Fac Ciencias Quim, Dept Fis Mat, Apdo 1072, Donostia San Sebastian 20080, Basque Country, Spain

[4] DIPC, Paseo Manuel Lardizabal 4, Donostia San Sebastian 20018, Basque Country, Spain

[5] Basque Fdn Sci, Ikerbasque, Bilbao 48013, Spain

[6] Lund Univ, MAX Lab 4, POB 118, S-22100 Lund, Sweden

来源：

PHYSICAL REVIEW LETTERS | 2017年 / 119卷 / 10期

关键词：

TOPOLOGICAL INSULATORS; TEXTURE INVERSION; SEMICONDUCTOR; TRANSITION;

D O I：

10.1103/PhysRevLett.119.106401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A comprehensive understanding of spin-polarized photoemission is crucial for accessing the electronic structure of spin-orbit coupled materials. Yet, the impact of the final state in the photoemission process on the photoelectron spin has been difficult to assess in these systems. We present experiments for the spin-orbit split states in a Bi-Ag surface alloy showing that the alteration of the final state with energy may cause a complete reversal of the photoelectron spin polarization. We explain the effect on the basis of ab initio one-step photoemission theory and describe how it originates from linear dichroism in the angular distribution of photoelectrons. Our analysis shows that the modulated photoelectron spin polarization reflects the intrinsic spin density of the surface state being sampled differently depending on the final state, and it indicates linear dichroism as a natural probe of spin-orbit coupling at surfaces.

引用

页数：6

共 53 条

[31] Importance of Charge Fluctuations for the Topological Phase in SmB6 [J].

Min, Chul-Hee ;

Lutz, P. ;

Fiedler, S. ;

Kang, B. Y. ;

Cho, B. K. ;

Kim, H. -D. ;

Bentmann, H. ;

Reinert, F. .

PHYSICAL REVIEW LETTERS, 2014, 112 (22)

[32] Orbital-symmetry-selective spin characterization of Dirac-cone-like state on W(110) [J].

Miyamoto, K. ;

Wortelen, H. ;

Mirhosseini, H. ;

Okuda, T. ;

Kimura, A. ;

Iwasawa, H. ;

Shimada, K. ;

Henk, J. ;

Donath, M. .

PHYSICAL REVIEW B, 2016, 93 (16)

[33] Influence of the substrate on the spin-orbit splitting in surface alloys on (111) noble-metal surfaces [J].

Moreschini, L. ;

Bendounan, A. ;

Bentmann, H. ;

Assig, M. ;

Kern, K. ;

Reinert, F. ;

Henk, J. ;

Ast, C. R. ;

Grioni, M. .

PHYSICAL REVIEW B, 2009, 80 (03)

[34] Understanding intensities of angle-resolved photoemission with circularly polarized radiation from a Cu(111) surface state [J].

Mulazzi, M. ;

Rossi, G. ;

Braun, J. ;

Minar, J. ;

Ebert, H. ;

Panaccione, G. ;

Vobornik, I. ;

Fujii, J. .

PHYSICAL REVIEW B, 2009, 79 (16)

[35] Direct mapping of spin and orbital entangled wave functions under interband spin-orbit coupling of giant Rashba spin-split surface states [J].

Noguchi, Ryo ;

Kuroda, Kenta ;

Yaji, K. ;

Kobayashi, K. ;

Sakano, M. ;

Harasawa, A. ;

Kondo, Takeshi ;

Komori, F. ;

Shin, S. .

PHYSICAL REVIEW B, 2017, 95 (04)

[36] SPIN-DEPENDENT PHOTOEMISSION INTENSITIES FROM SOLIDS [J].

OEPEN, HP ;

HUNLICH, K ;

KIRSCHNER, J .

PHYSICAL REVIEW LETTERS, 1986, 56 (05) :496-499

[37] Spin- and Angle-Resolved Photoemission of Strongly Spin-Orbit Coupled Systems [J].

Okuda, Taichi ;

Kimura, Akio .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2013, 82 (02)

[38] Chiral Orbital-Angular Momentum in the Surface States of Bi2Se3 [J].

Park, Seung Ryong ;

Han, Jinhee ;

Kim, Chul ;

Koh, Yoon Young ;

Kim, Changyoung ;

Lee, Hyungjun ;

Choi, Hyoung Joon ;

Han, Jung Hoon ;

Lee, Kyung Dong ;

Hur, Nam Jung ;

Arita, Masashi ;

Shimada, Kenya ;

Namatame, Hirofumi ;

Taniguchi, Masaki .

PHYSICAL REVIEW LETTERS, 2012, 108 (04)

[39] Direct observation of spin-polarized bulk bands in an inversion-symmetric semiconductor [J].

Riley, J. M. ;

Mazzola, F. ;

Dendzik, M. ;

Michiardi, M. ;

Takayama, T. ;

Bawden, L. ;

Granerod, C. ;

Leandersson, M. ;

Balasubramanian, T. ;

Hoesch, M. ;

Kim, T. K. ;

Takagi, H. ;

Meevasana, W. ;

Hofmann, Ph ;

Bahramy, M. S. ;

Wells, J. W. ;

King, P. D. C. .

NATURE PHYSICS, 2014, 10 (11) :835-839

[40] Spin-dependent reflection of very-low-energy electrons from W(110) [J].

Samarin, S. N. ;

Williams, J. F. ;

Sergeant, A. D. ;

Artamonov, O. M. ;

Gollisch, H. ;

Feder, R. .

PHYSICAL REVIEW B, 2007, 76 (12)

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